a legal professional; one who engages in the practices of law; an attorney; in England, a barrister; from the latin roots 'ass' and 'hat' meaning 'law' and 'yer,' respectively. Alt., less common usage, a business school student or recent graduate.

My ex-wife's asshat demanded the refrigerator in the divorce... I mean, the fucking refrigerator!!!

That corporate asshat is wearing Italian loafers, which cost more than my car.